Distance from Harlingen, TX to Round Rock, TX is 344Miles or 553 Km. You can get this distance about 4 hours 57 mins. If you want to planning travel with plane, you can get this distance about 1 hours 8 mins .
A car with an average MPG will needs 15.93 gallons of gas to get the route between these points.
The estimated cost of gas to get between Harlingen, TX and Round Rock, TX is $36.16.
During the route, an average car will release 312.1 pounds of CO2 to the atmosphere. Your carbon footprint is 0.91 pounds of CO2 per mile.
* Average US MPG used for calculations is 21.6 MPG.
* Average US gas price used for calculation is 2.27 per gallon.
* Coordinates of Harlingen, TX is 26.1906306, -97.6961026 and coordinates of Round Rock, TX is 30.5082551, -97.678896